:root {

    --color-orange: #F28C00;
    --color-green: #007A33;
    --color-yellow: #FFD700;
    --color-black: #1a1a1a;
    

    --bg-body: #ffffff;
    --bg-surface: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    

    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
    --bg-body: #121212;
    --bg-surface: #1e1e1e;
    --bg-card: #242424;
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0b0;
    --border-color: #333333;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.5);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: background-color 0.3s ease, color 0.3s ease;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--color-orange);
    color: white;
}

.btn-primary:hover {
    background-color: #d97d00;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--color-green);
    color: white;
}

.btn-secondary:hover {
    background-color: #00662b;
}


#loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-body);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loader-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}